Bushing



Feb. 12,1929. 1,701,819

A. L- MOLER BUSHING Filed July 29, 1926 Patents Feb. 12, 1929.

v T T ES Araur OFFICE.

' u. L. MOLER, F RICHMOND, VIRGINIA.

BUSHWGQ Application filed. July 29,

equally eflicient in any and all types of bearallel with each otherthroughout their length.

ings.

Bushings universally used for side rods of locomotive engines are knownto be objectionable in that when subjected to high running temperaturethey rigidly seize the pin whenever it becomes overheated and again thebrass becomes loose in the rod whenever it becomes overheated from anycause.

The object of my invention is, broadly stated, to provide the bearingface of the bushing with interruptions whereby the bushing may expandand contract without destructive efi'ort.

A further object of my invention is to use these interruptions asstorage spaces for a lubricant from which the lubricant is expelled andsupplied to the bearing when said interruptions close under expansion ofthe bearing face of the bushing.

My invention consists of a bushing having an interrupted bearingsurface.

In the drawings:

Figure 1 is an end elevation of my improved bushing Figure 2 is aperspective viewof the same. Figure 3 is a side elevation of 'thebush-1n igure 4 is a sectional view on the line 4-4 of Figure 1 looking inthe direction of the arrows.

The reference numeral 5 designates my improved bushing, which may be ofany size or shape to adapt it to the bearing to which it is intended tobe applied. The bushing shown in the drawing is especially adapted foruse as a locomotive engine side rod bushing. This bushing has a constantexterior diameter which is unafiected by the expansion of the innergfaceof the bushing between the grooves 7, thus minimizing the tendency ofthe bushing to become loose in its mounting. The grooves may expand andcontract without destructive effort and without affecting the exteriordiameter of the.

bushing.

According to my invention the bearing face 6 of the bushing is providedwith interruptions, extending from end to end of the bushing, which forpurposes of illustration I have shown in the form of grooves 7 par-1926. Serial No. 125,733.

While I believe that it is necessary that the grooves be parallel toprevent undue torsional stress in the bearing face 6, and prefer sucharrangement of the interruptions, at the same time I do not wish to belimited to such arrangement if it be found that other arrangements ofthe grooves is practical or desirable.

In these grooves 7 I pack a suitable lubricant whereby when the crankpin to which the side rod is secured becomes heated from any cause, theexpansion grooves 7 close more,

or less, thereby squeezing an extra supply of lubricant to the pinwearing surfaces; in this connection it is to be noted that I haveequipped some 300 locomotive engines with my improvedbushing and therehas not. been a single instance of a loose bushing or a stuck pin, inthese installations; it is also to be noted that the temperature inthese in stallations has never increased above normal, in View of all ofwhich my improved bushing is new standard equipment on one of the largerailway systems in this country.

lhe importance and economic value of my improved bushing will beappreciated from the fact that since the use of my bushing the railroadsystem, above referred to, is now saving from two to three tons of brasseach month which heretofore was lost by the brass becoming loose inrod,.necessitating renewal.

What I claim is:

1. A bushing having a constant exterior diameter, grooves formed in theinner face of the bushing and opening through the ends of the bushingwhereby the metal of the inner face between the grooves may expandwithout destructive effort and without aflecring the exterior diameterof the bushing, thus preventing the bushing from becoming loose in itsmounting.

2JA bushing having a constant exterior diameter, grooves formed in theinner face of the bushing and opening through the ends of the bushingwhereby the metal of the inner face between the grooves may expandwithout destructive effort and without affecting the exterior diameterof the bushing, thus preventing the bushing from becoming loose in itsmounting, and a supply of lubricant in said grooves, whereby saidlubricant is supplied to the bearing when the walls of said grooves moveunder expansion of the metal of the said inner face.

In testimony whereof I afiix no signature.

ABRAHAM L. OLER.

